Cross coil type indicating instrument having internally disposed

Details Cross coil type indicating instrument having internally disposed Cross coil type indicating instrument having internally disposed

1991-12-31

1993-06-29

Snow, Walter E.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With electromagnetic field

324151A, G01R 120, G01R 116

Patent

active

052237915

ABSTRACT:
A cross coil type indicating instrument including a coil bobbin having first and second chambers separately formed inside, a rotary shaft to which a magnet rotor and a rotary gear are secured in the first chamber, and an eccentric shaft to which a transmission gear is secured in the second chamber so as to engage with the rotary gear. A pointer is secured to an end portion of the eccentric shaft. Further, the coil bobbin has a coil winding portion with a flat surface outside where the first chamber is formed, and two coils are wound on the coil winding portion in such a manner that they are perpendicular to each other. Hence, the coils are guided linearly when wound on the coil winding portion.

REFERENCES:
patent: 3114878 (1963-12-01), Medlar
patent: 3323058 (1967-05-01), Anthon
patent: 5062135 (1991-10-01), Ohike
Patent Abstracts of Japan, vol. 013, nol. 064 (P-827) Feb. 14, 1989.
Elektrotechnik, vol. 55, Oct. 1973, p. 18, "Drehzahlwachter fur 1/100 bis 30000 min".

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